I've used a variety of things to cut and drill glass over the years, it's a fickle thing some breaks are inevitable. Making sure your line is spot on and being patient with the hot/cold water helps a lot. Also thicker glass like wine bottles take longer but tend to work better than beer bottles in my experience (though I've cut quite a few beer bottles successfully there is a higher failure rate). Very much a practice makes perf... err... better thing 😉
Cut proof gloves (or just decent leather work gloves) will prevent most injuries.